18438668

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:821

約数の個数: 24

約数和(自身を含む): 33106752

約数和(自身を除く): 14668084

約数列:

[1, 2, 4, 67, 107, 134, 214, 268, 428, 643, 1286, 2572, 7169, 14338, 28676, 43081, 68801, 86162, 137602, 172324, 275204, 4609667, 9219334, 18438668]

約数ペア:

[(1, 18438668), (2, 9219334), (4, 4609667), (67, 275204), (107, 172324), (134, 137602), (214, 86162), (268, 68801), (428, 43081), (643, 28676), (1286, 14338), (2572, 7169)]